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Hitherto we have considered the apparent motion of the star about its true place, as made only in a plane parallel to the ecliptic, in which case it appears to describe a circle in that plane; but since, when we judge of the place and motion of a star, we conceive it to be in the surface of a sphere, whose centre is our eye, 'twill be necessary to reduce the motion in that plane to what it would really appear on the surface of such a sphere, or (which will be equivalent) to what it would appear on a plane touching such a sphere in the star's true place.
James Bradley
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James Bradley
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Born:
March, 1693
Died:
July 13, 1762
(aged 69)
Bio:
James Bradley was an English astronomer and priest and served as Astronomer Royal from 1742, succeeding Edmond Halley. He is best known for two fundamental discoveries in astronomy, the aberration of light, and the nutation of the Earth's axis.
Known for:
Flags of Our Fathers
Flyboys: A True Story of Courage
The Imperial Cruise
The Resurrectionist
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